Question Gigabyte BIOS - 5 beeps on boot - with Mobo lights & fans on - but no display

[Chris_AmPCBuilder]

First off - thanks to Karadjgne on this thread: https://forums.tomshardware.com/threads/5-short-beeps-gigabyte-b360m-d2v.3306313/

I'd just finished a build of a gaming PC using all 'known good' parts ... Except for the PSU ... and the CPU (i5-14600KF)

I bought the PSU from a guy who told me he'd just upgraded to 1000W PSU and the 750W I purchased he said was taken from a stable and working PC. It was the last component on my mind to be dodgy. Even more so as the multiple LED lights and fans all came up on boot. But no screen. And 5 beeps. (If you don't have a internal speaker handy - buy one !!!)

I tried everything that didn't involved ripping a freshly pasted CPU from its socket and trying with another CPU. These 5 beeps have many, many sources and the error description is woefully un-specific. But Karadjgne mentioned the CPU power socket as being a potential cause. So I pulled out all the power cables and connected them to a known-good 750W PSU.

Hey presto. It booted to the BIOS first time! ... Thought I'd post the issue here in case others are struggling with the 5 beeps. And Karadjgne, thank you so much.

 

[Lutfij]

I bought the PSU from a guy who told me he'd just upgraded to 1000W PSU and the 750W I purchased he said was taken from a stable and working PC.
The PSU is the last thing you should skimp on. Used PSU's tend to have issues that only the seller would know is wrong with it or worse, they know it's a bad unit and were looking to offload it to an unsuspecting person. You've mentioned the advertised wattage of the PSU, what is the make, model and age of the unit? What did it power during it's tenure in the former seller's PC?

I tried everything that didn't involved ripping a freshly pasted CPU from its socket and trying with another CPU.
We advise users to breadboard their systems before they go inside a case and potentially hours worth of cablemangement to spruce it up. That advise goes twice over if you're working with used parts.

I'd just finished a build of a gaming PC using all 'known good' parts ... Except for the PSU ... and the CPU (i5-14600KF)
Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:

 

[Chris_AmPCBuilder]

Update: The PSU I bought 2nd hand is fully modular and has two CPU power outlets. I tried the 2nd outlet and it works. So I tried the first outlet again, and it works. Didn't I have it properly plugged in the first time? Actually, I probably did. If I wiggle the first socket, mostly it is fine. But sometimes it is not and I get the 5 beeps. Pins look fine and they all 'sound' the same when pinged. Fortunately, the 2nd socket appears to be rock-solid. Good enough for this build. I've entered the issue in the PC's 'as-built log' and stuck a note to that effect to the PSU in case the next guy runs into the same issue. (Never been a fan of fully/semi modular PSUs. Even less so now.)

 

[Chris_AmPCBuilder]

I bought the PSU from a guy who told me he'd just upgraded to 1000W PSU and the 750W I purchased he said was taken from a stable and working PC.
The PSU is the last thing you should skimp on. Used PSU's tend to have issues that only the seller would know is wrong with it or worse, they know it's a bad unit and were looking to offload it to an unsuspecting person. You've mentioned the advertised wattage of the PSU, what is the make, model and age of the unit? What did it power during it's tenure in the former seller's PC?

I tried everything that didn't involved ripping a freshly pasted CPU from its socket and trying with another CPU.
We advise users to breadboard their systems before they go inside a case and potentially hours worth of cablemangement to spruce it up. That advise goes twice over if you're working with used parts.

I'd just finished a build of a gaming PC using all 'known good' parts ... Except for the PSU ... and the CPU (i5-14600KF)
Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:

Thanks for the reply. For completeness:

1. The PSU is a be Quiet Straight Power 11 750W (Tier A on the PSU list?) (My workshop PSU is a brand new Corsair 750W Tier A+ unit purchased only for ensuring a PSU issue is, in fact, a PSU issue.)

2. Yeah I should have fully breadboarded! All parts except the new CPU and PSU had been already.

3. Parts as follows:

CPU: i5-14600KF
CPU cooler: Peerless Assassin 120 SE
Motherboard: Gigabyte B760M DS3H AX WiFi ... with BIOS at F21c
Ram: Kingston Fury Beast DDR5 6000Mhz.
SSD/HDD: Netac NI 7000-Q PCIe Gen 4x4 1TB
GPU: Zotac Gaming NVIDIA GeForce 3070
PSU: beQuiet Straight Power 11 750W
Chassis: DEEPCOOL CC360 ARGB White Mini Tower mATX Case
OS: None installed as yet ...
Monitor: my $1 workshop monitor 1400x900 with quality HDMI, DP and VGA cables